分类讨论,作为一种重要的数学思想方法,在高中数学学习中占有很重要的地位,一直是数学高考考查的重点内容·对于分类讨论的问题,许多考生条理不清,思想混乱,最困难的是不知如何确定分类的标准,这就要求我们在平时教学中应注意分类讨论的思想的渗透·值得注意的是,一道题目是否 Classification and discussion, as an important method of mathematics, plays an important role in the study of high school mathematics. It has always been the focus of the mathematics entrance examination. For the discussion of classification, many candidates are unclear, confusion is the most difficult. I do not know how to determine the classification criteria. This requires us to pay attention to the penetration of the ideas of class discussion during ordinary education. It is worth noting that whether a topic is